Partial Reprint from EPA Announcement
The U.S. Environmental Protection Agency (EPA) is announcing the selection of 151 communities to receive 154 grant awards totaling $66.5 million in Brownfields funding through its Multipurpose, Assessment, and Cleanup (MAC) Grants.
This funding will support underserved and economically disadvantaged communities across the country in assessing and cleaning up contaminated and abandoned industrial and commercial properties. Approximately 50 percent of selected recipients will be receiving EPA Brownfields Grant funding for the first time and more than 85 percent are located in or serving small communities.
The grant announcement includes:
The list of the fiscal year 2021 applicants selected for funding is available here: https://www.epa.gov/brownfields/applicants-selected-fy-2021-brownfields-multipurpose-assessment-and-cleanup-grants
Please spend some time with our experts as they help you negotiate funding, regulatory compliance, and helpful tools that will help your community prepare to remediate brownfields and other properties with a past into affordable housing, mixed communities bolstering economic development, stadiums, recreation facilities and parks, logistics centers…
SCS’s next webinar helps our clients prepare to capitalize on upcoming opportunities to redevelop contaminated properties as a result of market demands, stimulus funding, and traditional Brownfields grant programs. In this live, non-commercial presentation we’ll cover the following:
This educational, non-commercial webinar with a Q&A forum is free and open to all who want to learn more about meeting the environmental challenges these new opportunities offer. We recommend this month’s discussion for developers, contractors, municipal officials, city managers interested in using stimulus funds for local development, and advisors such as banks, insurance firms, and attorneys to private and public entities.
DATE: Thursday, April 29, 2021
TIME: 2 p.m. ET, 1 CT, Noon MT, 11 PT
You will receive a Zoom email with your link to attend. Do not share this link.
Cities like Oviedo, Fla. are investing in the cleanup of defunct brownfield sites, converting even highly contaminated properties from liabilities to assets that pump economic vitality into their communities. And municipalities are getting reimbursed for doing so. But these ambitious undertakings require the expertise of professionals with strong environmental engineering and remediation backgrounds and an understanding of federal and state regulations aimed to protect public health and the environment.
This spring, after over two years of working closely with SCS Engineers and the development team, the City of Oviedo will unveil its redevelopment project: a 3.7-acre public park with a walking and jogging trail. The loop trail will be part of a larger trail system interconnecting through the City and the Cross-Seminole trail, with the latter running throughout the county.
The walking and jogging path surrounds a pond with a dual purpose: to serve as an added feature to this peaceful retreat and part of an enhanced stormwater management system that will allow business owners to convey drainage from their properties via an underground stormwater management system. Along the park perimeter, historical displays will tell the story of the nearly century-and-a-half-old City’s past.
SCS helped the City navigate regulatory issues associated with redeveloping environmentally impacted land, ensuring safe and environmentally sound practices, and maximizing financial reimbursement through the Florida Brownfields Program.
In the 1940s, the site operated as a farm but lay idle and overgrown with vegetation decades after. When SCS came in to complete the environmental assessment, the team confirmed that years of pesticide application did leave arsenic behind in the soil.
“It appears that the pesticides were used appropriately, but with the change in land use and to meet the state’s environmental criteria, we need to address the residuals to redevelop the property as a park. It would otherwise remain as unusable land without this cleanup,” says Kirk A. Blevins, SCS senior project manager.
SCS completed site assessment activities according to Chapter 62-780 FAC, which includes additional testing to delineate the extent of arsenic-impacted soil further and evaluate groundwater conditions. Assessment activities indicated that while not impacting groundwater, the soil contained arsenic above acceptable regulatory levels. In its next step, the team designed a remedial action plan with multiple considerations for success.
“Given that the site would include both a stormwater management pond and a public park, we recommended that rather than cap the soil to reduce potential exposure, the City meet the strictest cleanup criteria. This option is the most protective of human health and the environment,” Blevins says.
The plan included removing approximately 47,000 cubic yards of arsenic-impacted soil, then placement of clean import fill for areas open to the public. Blevins and his team proposed excavating to the property boundary, and they provided technical guidance to the City contractor on how to efficiently and safely execute this undertaking. “It was important to excavate to the property boundary to assure removal of the impacted material so that the City would receive unconditional closure approval from the regulatory agency,” explains Blevins.
Concise reporting of the work is key to securing that approval, so SCS documented the excavation of impacted soil to the appropriate depths and lateral extents, managing it appropriately onsite, and transporting it to an approved landfill for disposal.
The team worked with the City’s environmental counsel to bring the site into the Florida Brownfields Program and prepared its voluntary cleanup tax credit (VCTC) applications for submission to the Florida Department of Environmental Protection (FDEP). All expenses and payment, confirming the expenditures “integral to rehabilitation,” are documented. With this validation, the City of Oviedo is getting back about half of its $1,432,000 related investment. It will receive another 25% bonus once FDEP issues a letter stating that no further action is required.
Documentation and communication with the state regulators is an ongoing process requiring a detailed review of contractor proposals, invoices, pay applications, proof of payment, and a summary of progress each year over the project’s life. “In particular, a line-item review of invoices can sometimes establish additional actions that are critical to remediation that otherwise might have been overlooked and not captured. This process is vital to maximize reimbursement,” Blevins explains.
Cost, as always, is a client priority. So, SCS and the remedial team focused on minimizing offsite disposal of the impacted soil, proposing over-excavating the pond, using the unimpacted soil as the onsite fill, and placing a portion of the impacted soil at the pond’s bottom.
“This was possible because testing indicated that the impacted soil would not leach arsenic into the pond water at a rate that would adversely affect water quality. We confirm that arsenic concentrations are below the strictest regulatory level before any soil from over-excavating the pond can be of beneficial reuse onsite. Safety of people and environmental protection always comes first,” Blevins says.
The ultimate outcome: Oviedo has a regional stormwater pond suited for potential commercial operations to use for drainage, maximizing available land for economic development, as well as a recreational park for the community and visitors.
SCS’s technical expertise was crucial to successfully remediating this site, attests Bobby Wyatt, Public Works Director at City of Oviedo, Florida.
“The team easily navigated and sped up the permitting process for the arsenic removal and provided continuing assistance with monitoring during construction. The process for completing the specific remediation/permitting was unfamiliar to City staff, and SCS provided efficient and competent assistance to get us where we needed to go.
Their experience provided a sense of confidence that we were going to be able to make the park project successful,” Wyatt says.
SCS has worked on brownfields projects and voluntary remediation across the U.S. for over 45 years. We convert once nonproductive commercial and industrial properties into revenue-generators and affordable housing.
Resources:
Brownfields and Voluntary Remediation
Somshekhar (Som) Kundral is SCS Engineer’s most recent go-getter to receive the honor of a Waste360 40 Under 40 Award. Described by his supervisor, SCS Vice President Bob Speed, as ‘humble, hungry, and smart,“ Kundral has spent no time in the slow lane.
He joined SCS as a young engineer in 2010, and quickly worked his way up, reaching a senior management position in a few years.
He now oversees multiple remediation projects, from small to multimillion-dollar jobs, taking ownership of environmental aspects of redevelopment, from remediating groundwater contamination to addressing landfill gas problems as challenges. He has come up with unique and far-reaching solutions through collaboration with his team to help clients achieve their business goals.
But before telling the story of Kundral, the senior-level engineer and project manager, let’s start with an earlier chapter.
“It’s an interesting and kind of odd story,” he recalls. “A friend asked me to drive him to a job interview as he did not have transportation. The HR person, for some reason, asked both of us to interview [having heard I was an engineer too].
“I was dumbfounded and a little nervous as I was not prepared. I had to download my resume from my yahoo ID quickly… I thought, what have I got to lose? It’s a good engineering job with a large real estate company.”
He got the job and continues to seize practically every opportunity before him, growing from each one. Today at SCS, Kundral oversees several redevelopment projects, including a 500-acre landfill conversion to a large business park, which received the American Council of Engineering-Florida and the Environmental Business Journal awards.
“The landfill had a lot of environmental and geotechnical issues, with the largest ones around groundwater contamination and stormwater management. They are typical redevelopment challenges we need to overcome, and in this case, they were on a larger scale,” he says.
As the intricate strategy evolved, Kundral, working with his project advisor, Senior Vice President Eddy Smith, called many multidiscipline group huddles. Kundral has assessed, reassessed, stopped, and restarted. And he has brought in more engineers to pump up the team’s expertise and take this project to the next level.
“We are now halfway through. And I tell you, I don’t think I should have gray hair yet, but I have some now. Still, I feel so relieved because we have the formula to make this work. “We did it by integrating the groundwater and stormwater management systems,” he says.
The integration resolves two big issues: It, of course, addresses groundwater contamination. But Kundral and the team also want to maximize areas for redevelopment, and the design supports this goal as it eliminates the need for stormwater ponds.
To him, the job is as much about open communication and teamwork as technical talent.
“At the end of the day, no matter what we do, we deal with people. I believe in staying in front of our clients, explaining what to expect when, and I continually engage with staff who support me.” With this business park conversion, as they dove deeper, they saw more intricacies. “It was important to help our client see we were not simply trying to catch up; for them to understand we had to give more time and attention to do the job as best as it can be done.”
From age 28, when he came to SCS, Kundral was keenly aware that there was potential to do plenty and wanted to take on more. “I’m just curious to see what I can get into,” he says. He began with smaller projects, each with one or two focuses. Little by little, he could connect more dots. “I could start to see the big picture and wanted to know more about how to pull the whole project together,” he says.
While he mostly oversees redevelopment projects, he has also supported industrial waste permitting and compliance reporting endeavors. He describes the latter projects as straightforward.
“I prefer the more involved brownfields projects; there is more to learn when overseeing the work. Each site is unique, with different challenges. And each time, what you discover and how you approach it is different.”
Doing the work he loves has come with tradeoffs, such as giving up kayaking and cutting back on trips to the beach—once his favorite pastimes. “They’re fun, but they are day- and night-long ventures. By the time I got home, Saturday was gone. And I needed to catch up on work emails at night and plan for the next week.”
He does find a few hours some weekends for another interest—photography—heading to the zoo or state parks with his wife, Anjana, who shares his passion for watching out for a good “Kodak moment” and capturing it.
Nevertheless, figuring out how to fix problems is still his greatest passion, further maturing from experience. When asked if he could be someone else for a day, who that would be, he thought for a while, then said: “I would love to be myself again but be able to watch as a third person and make note of the scope of improvements I have made over time. From that, perhaps I can learn even more.”
Kundral speaks of three people who helped shape him: his grandfather, father, and father-in-law.
“Growing up watching my grandfather’s resilience helped me learn how to manage hard situations.
From my father, I learned to view situations in ways to understand people better. This has helped shape my thoughts to improve my communication.
From my father-in-law, I learned the importance of humor and gained a sense of humor. This is a good thing for lightening up situations and reducing stress.”
Kundral will take on challenges because it’s part of getting to the end goal. And reaching that goal is what sparks him. He goes back to the 500-acre Florida brownfield to illustrate. “This property is being converted to a business park with great companies operating there, like Home Depot and Boeing. So, our client is creating a legacy. The project creates jobs. It brings in taxes. It improves environmental conditions. We are part of it, and that excites me.”
Kundral is in good company. These other SCS Young Professionals are past 40 Under 40 Award recipients. Like Kundral, they work diligently, solving an array of complicated solid waste challenges. SCS Engineers is very proud of our YP’s award-winning accomplishments for their clients and their contributions to their communities’ health and welfare.
Steve Linehan is a Senior Project Manager who oversees solid waste and environmental services projects from SCS’s Oklahoma City and Wichita offices. Linehan has a broad range of expertise, including solid and hazardous waste regulations, landfill design, stormwater modeling design, and remedial action plans. He holds professional engineering licenses in Kansas, Missouri, Nebraska, and Oklahoma.
Srividhya (Vidhya) Viswanathan, Vice President, is recognized for her innovative engineering plans and designs of traditional solid waste and renewable energy programs. Viswanathan, Southwest Director of Engineering, continues consolidating and integrating engineering operations to provide more streamlined and efficient services. She leads solid waste engineering operations in California, Arizona, Nevada, Utah, and New Mexico.
Solavann (Sol) Sim, a Project Director and OM&M Western Regional Manager for SCS Field Services, has expertise in all facets of landfill operations, including landfill gas and liquids management. His teams keep landfills safer and running within compliance. He is a licensed professional engineer in Alaska, Arizona, California, Colorado, Hawaii, Montana, New Mexico, Nevada, Oregon, and Utah.
David P. Hostetter, Business Manager for SCS RMC® (Remote Monitoring and Controls), works in environmental engineering and technology. He serves clients by leveraging technology to reduce business and industry environmental impacts. His environmental solutions reduce potential greenhouse gas emissions and lower environmental risk from landfills, thus protecting workers and local communities.
Thanks to South Florida’s hot real estate market and impressive growth rates, a dwindling supply of properties are available for development in the area. The Atlantic Ocean limits South Florida’s development options to the east and Florida Everglades to the west. Due to these supply limitations, developers seek to redevelop contaminated landfills, golf courses, and agricultural land. Environmental due diligence is essential to the successful redevelopment of these types of properties. Depending on the property’s size and the extent of the contamination, redeveloping contaminated properties can cost upwards of a million dollars.
Typically, developers will have to deal with contaminants like ammonia at a landfill redevelopment project, arsenic at a golf course redevelopment project, or pesticides at agricultural redevelopment projects. In some cases, remediation and assessment using the standard or “default” cleanup target level (CTL) can stop a project from proceeding. However, before abandoning the project, developers should consider the potential for establishing alternative cleanup target levels (ACTLs) for the site’s contaminants.
Several technical strategies are available to developers considering redeveloping contaminated properties to reduce overall costs and expedite the construction schedule. Costs associated with managing material above a default CTL can include disposal of contaminated material, importing clean fill, and delays to permitting and construction schedules if an environmental regulator determines your assessment is incomplete.
Understanding Default Cleanup Target Levels
Environmental regulators use a range of tools to develop default CTLs. Default CTLs can be based on complex equations that consider toxicity and exposure assumptions such as ingestion rates, body weight, age, and exposure levels. Soil properties are also considered. In some cases, human health may not even be the determining factor in calculating a default CTL. Rather, a particular contaminant’s environmental impact on the local ecosystem may be what determines its default CTL.
While default CTLs are useful tools to formulate remediation strategies on a broad range of sites, default CTL values will be overly conservative for other sites. More explicitly, some sites’ present and future use and exposure characteristics are so different from the assumptions used to calculate the default CTLs – that the default CTL does not accurately correspond to the risk associated with the proposed sites’ use. In such cases, explore the development of an alternative cleanup target level (ACTL).
Establishing Alternative Cleanup Target Levels
With the right approach, a site ACTL could provide significant cost savings while maintaining regulatory compliance. But buyers beware; choose your environmental consultant carefully. The consultant should understand the site-specific factors that affect the calculation of the ACTLs. Often, a knowledgeable consultant has a good idea of the outcome even before investing the client’s time and money pursuing the alternative.
Cost and Schedule Benefits
To illustrate cost and development time-savings, consider a simple example of arsenic-contaminated soil at a residential development. Suppose there are no other reuse options available for the contaminated material, and the material must be disposed of at a landfill. Given 100,000 cubic yards (cy) of contaminated material at a disposal cost of $60 per cy, we estimate 6 million dollars in disposal costs, not including importing clean fill. However, if the site is an age-restricted residential community, certain exposure assumptions could be modified to calculate a much higher ACTL for arsenic. The soil would no longer be regulated as contaminated, and costs associated with disposal, imported material, and soil tracking are eliminated. Soil that was considered contaminated based on the default CTL is now clean based on the ACTL.
Let us look at a more complex example. Consider the case of a site contaminated with dieldrin, a common pesticide found at golf courses and agricultural properties. A leachability ACTL recalculates the default leachability of a particular soil contaminant. A leachability ACTL uses site-specific soil chemical and physical properties, such as soil organic matter content, bulk density, and annual average soil moisture content, and determines a more realistic risk profile associated with soil that could potentially leach contaminants into the groundwater. With an ACTL above the default CTL, remediation may not be necessary, or the site may not require a deed restriction, or ongoing costs associated with monitoring of the groundwater or operation of a remediation system could be eliminated, making the completed project more attractive to potential buyers.
Summary
Developing ACTLs is a careful, thoughtful strategy that an experienced environmental consultant can propose based on the site’s unique conditions. The developer’s financial objectives and schedule and the property end-use must be carefully considered to develop a thorough redevelopment approach. The use of an ASCTL could mean the difference between a project that is financially infeasible and one that is attractive and profitable.
Learn more about remediation and brownfields redevelopment.
About the Author: Troy Schick, PE, specializes in stormwater and groundwater management and voluntary remediation of properties, including brownfields and former landfills. Troy uses his experience at SCS Engineers and education as an Environmental Engineer and Environmental Manager with field inspection, sample collection, documentation, and project management to benefit Florida communities. Troy is available for consultation at tschick@scsengineers.
EBJ presented awards earlier this month for notable solutions and response to Covid-19, in addition to new technologies and recognition of environmental firms celebrating 50+ years. The publication, EBJ Vol XXXIV No 1&2: 2021 Executive Review & 2020 EBJ Business Achievement Awards & Lifetime Achievement Awards is online here.
We thank EBJ and Grant Ferrier for getting so many influential environmental leaders into one forum. Grant is EBJ’s Editor and Founder. He and Jim Walsh had a fun exchange during the event when EBJ recognized SCS’s longevity and commitment to the environmental industry for 50 years. The presentation included a short Q&A with Grant and Jim Walsh in addition to the multiple awards presented for SCS solutions.
Marketing Specialist Dana Justice of SCS Engineers shares her favorite snack on Snacks with a Surprise while discussing Brownfields’ economic potential, the environmental impact, and the opportunity to serve communities through her support. Her work with SCS’s environmental consultants and engineers provides land remediation and Brownfields grants bringing properties with a past back to pristine condition. The redevelopment of these properties, typically with developed infrastructure already in place, provide jobs, housing, parks, and tax revenues for the surrounding community.
Learn more about the Urban Land Institutes’s Women’s Leadership Initiative or
more about Brownfield Remediation and Grants here.
SCS Engineers announces Brittney Odom’s promotion to the Southeast region’s Environmental Services Director. Odom will continue expanding and integrating SCS’s environmental engineering and consulting operations to provide more streamlined and efficient services in her new role. She will lead environmental operations in Alabama, Florida, Mississippi, Georgia, and the Caribbean. As with all SCS leaders, she continues serving her clients in Boca Raton in her expanded role.
Odom supports real estate developers, municipalities, banks, and insurance firms to identify properties’ environmental conditions. Next, depending on soil, water, and geotechnical testing determines the appropriate environmental due diligence and the engineering activities necessary to redevelop them and be in 100% compliance with local and federal rules.
There is an active push to develop more affordable residential housing in the U.S. Real estate developers and residents want to be close to business and transportation hubs, but potential development sites could require remediation. Once agricultural sites, golf courses, or at one-time housing industrial operations, these properties need environmental testing, due diligence, possibly remediation, or vapor intrusion barriers to ensure the safe redevelopment. No matter the condition, properties with a past can return to pristine condition and make desirable residential and mixed housing locations, supporting economic development.
“It’s important to know and understand all of the options ahead of time to keep costs down and environmental quality up for sustainable communities,” stated Odem. “You need to reassure all parties that there is no leaking storage tank or anything that could compromise health.”
Her focus recently is on the redevelopment of large-size properties contaminated with arsenic and other legally applied pesticides. These property types include golf courses and agricultural land that have become inactive but are in high demand for residential use. These projects may need soil management, including remediation, soil blending, and placement restrictions.
Odom has years of experience conducting environmental site assessments, overseeing remediation activities, and submitting regulatory reports, including Phase I & II assessments in Florida, Tennessee, Louisiana, Texas, and the Caribbean. These focus on gas station properties and bulk storage terminals for large oil companies, often located on prime waterfront sites.
Additional highlights in Odom’s professional career include expertise in the applicable Florida Regulatory Chapters and Standard Operating Procedures. She also has experience in state and international cleanup efforts and their associated regulatory procedures. She participated in successful environmental closure efforts, with imposed engineering controls and property restrictions.
Odom has ten years of experience managing subsurface investigation and conducting oversight during remedial activities, including source removal and remediation system installation. She holds certifications in 40-Hour HAZWOPER/OSHA training, Loss Prevention System, CPR, RCRA Hazardous Waste, DOT Hazardous Waste, and American Petroleum Institute certification.
“Brittney’s breadth of experience solving the complexities of large scale redevelopment while meeting all environmental regulatory compliance enables her to innovative better solutions,” said Carlo Lebron, SCS vice president and director of SCS’s Southeast operations. “She’s an expert, with access to our deep bench of engineers, scientists, technology, and even economists within SCS.”
SCS Engineers and Florida East Coast Industries (FECI) are to be honored at the annual conference in Florida planned for August 2021. The firms will receive a 2021 Engineering Excellence Award by the American Council of Engineering Companies of Florida. The honor acknowledges SCS for the environmental engineering firm’s innovative design that integrates groundwater remediation with the stormwater management system on a 500-acre former landfill site. The design enabled the developer to remediate the former landfill into the Countyline Corporate Park in Southeast Florida.
Industrial real estate is in high demand, but former landfills and brownfields present environmental challenges that can become cost-prohibitive to redevelop without sound environmental expertise. FECI retained the professional services of SCS Engineers to provide consulting and design services addressing the environmental concerns preventing the transformation of a former landfill into a state of the art business park.
Environmental guidelines require 28% (or about 140 acres) of the site to be set aside for stormwater retention. The set aside would require the relocation of several thousand cubic yards of waste and prevent the 140 acres’ redevelopment. The estimated loss of $300 million in potential real estate sales, coupled with the groundwater remediation expense, made the site redevelopment cost-prohibitive. Unless resolved, the problem also impeded FECI’s corporate sustainability goals.
SCS’s experts in landfill design, closure, and remediation, developed a solution tying together the groundwater remediation and stormwater management systems. The integrated system allows for shallow aquifer recharge with stormwater and captures impacted groundwater at the site’s boundary. “We were able to provide an alternative design acceptable to all the permitting agencies, eliminating the need to set aside large areas for stormwater retention,” said Mr. Som Kundral, P.E., SCS’s senior project manager.
SCS’s remedial actions protect public health while opening the site for reuse. The project will be completed in phases. Phase I, consisting of 160 acres, is complete, with two million square feet of occupied businesses and a 30-acre community park. Development of the other three phases, which include another six million square feet, is underway.
The development will create hundreds of new jobs, deliver several hundred million dollars to the city and county tax base, and provide a 30-acre public park. “The engineering solution protects the environment while meeting FECI’s strategic, social, economic, and sustainability goals,” said Mr. Eduardo Smith, P.E., SCS’s senior vice president of client success.
Learn more about these related topics, events, and case studies at SCS Engineers:
As large tracts of geographically desirable vacant land become scarcer, residential and commercial property developers are increasingly turning to old landfills or former dumps. However, such redevelopment is complex and rife with uncertainties. When compared to greenfield development, the land acquisition costs are lower. Still, any savings are typically offset by greater environmental and infrastructure costs associated with the foundation, landfill gas management, stormwater management, groundwater impacts, meeting closure requirements, and multiple regulatory agency coordination. Therefore, it is important to maximize the developable area while providing engineering solutions to make the project economically feasible. In this blog, we identify some options to reuse challenging sites and lessons learned to contribute to successful redevelopment projects.
Deep Dynamic Compaction
Old landfills or dumps present some unique soil stability challenges. Deep dynamic compaction (DDC) is a ground stabilization technique that has gained popularity in recent years to improve subsurface soil conditions. DDC involves dropping 6 to 30-ton weights from a height between 30 and 75 feet to achieve the desired soil compaction. DDC can effectively apply to a range of subsurface materials, including former C&D debris or municipal solid waste dumps.
DDC provides a stable foundation for future development, minimizes differential settlement while leaving the landfill waste in place, and eliminates the costs associated with removing, transporting, and disposing of buried waste, costing millions of dollars. For simplicity’s sake, let’s consider a 1-acre old landfill or a dumpsite with an average of 15 feet of waste. If excavating the waste and replacing it with clean fill, the disposal fee costs for the excavated waste alone could exceed $400,000. Alternatively, DDC costs range from $1.50 to $2.00 per square foot or $65,000 to $87,120 per acre, excluding mobilization, which costs around $30,000.
Gas Mitigation Systems
Constructing buildings on top of dynamically compacted areas generally requires a combustible gas barrier layer below the building foundation to manage subsurface combustible gases (typically methane). The barrier is required because the waste remains in place. In its simplified form, gas mitigation systems include:
These gas mitigation systems can be either a passive or an active system with a blower. The cost of such systems varies depending on the size of the building, location, and type of liner system used. Typical capital costs for passive systems are in the range of $7 to $9 per square foot for the spray-applied liner and $3 to $4 per square foot for the HDPE liner. For an active system using blowers, add $3 to $4 per square foot. The designer configures a system from these options to address the client’s risk preference and considering future tenant preferences.
Using innovative approaches, impaired lands are increasingly attractive to developers. Beyond the cost-saving benefits to developers realized through DDC and an appropriate gas mitigation system, such projects also create local jobs, increase the tax base, and protect public health and the environment.
About the Authors:
Somshekhar Kundral – Mr. Kundralis, PE, is a Senior Project Manager with over 12 years of broad and diverse environmental engineering experience that includes projects in landfill redevelopment, landfill gas management system design, site assessment, groundwater remediation system design, stormwater management, and injection well system construction. Som is experienced with site permitting, compliance reporting and construction administration services, and remediation systems’ operation and management.
